Bug Identifier
False Widow Spider
Community identification

False Widow Spider

Steatoda grossa

Order & Family
Araneae, Theridiidae
Size
Females typically range from 6-10 mm; males are smaller, ranging from 4-6 mm.
See this bug in the Encyclopedia

Natural Habitat

Typically found in dark, secluded areas such as basements, garages, garden sheds, and under rocks or logs.

Diet & Feeding

Carnivorous; they eat various insects and other spiders by trapping them in tangled webs and injecting venom.

Behavior Patterns

They are nocturnal and generally shy, spending most of their time in their web. They are known for their messy, three-dimensional webs.

Risks & Benefits

They provide a benefit by controlling pest populations. While their bite can be painful and cause minor swelling or malaise, they are generally not considered medically significant to healthy humans.